java - Signing AWS HTTP requests with Apache HttpComponents Client

Question

I'm trying to make HTTP requests to an AWS Elasticsearch domain protected by an IAM access policy. I need to sign these requests for them to be authorized by AWS. I'm using Jest, which in turn use Apache HttpComponents Client.

This seems to be a common use case, but I can't find what should I do so Jest can sign all requests.

Answer 1

I think I found it! :)

This project seems to do exactly what I want : aws-signing-request-interceptor, described as "Request Interceptor for Apache Client that signs the request for AWS. Originally created to support AWS' Elasticsearch Service using the Jest client.".

Edit : I forked the project to fit my needs (Java 7, temporary STS credentials), and it works nicely.

Here is an example of usage (here without STS temporary credentials):

String region = "us-east-1";
String service = "es";
String url = "???"; // put the AWS ElasticSearch endpoint here

DefaultAWSCredentialsProviderChain awsCredentialsProvider = new DefaultAWSCredentialsProviderChain();
final AWSSigner awsSigner = new AWSSigner(awsCredentialsProvider, region, service, () -> new LocalDateTime(DateTimeZone.UTC));

JestClientFactory factory = new JestClientFactory() {
    @Override
    protected HttpClientBuilder configureHttpClient(HttpClientBuilder builder) {
        builder.addInterceptorLast(new AWSSigningRequestInterceptor(awsSigner));
        return builder;
    }
};
factory.setHttpClientConfig(new HttpClientConfig.Builder(url)
        .multiThreaded(true)
        .build());
JestClient client = factory.getObject();